Bruce Tomkins
Staff Research Scientist
Mass Spectrometry

Publications

SELECTED OPEN LITERATURE PUBLICATIONS

K. Korsah, W. Murray, B. A. Tomkins. “Hydrazine Scene: It’s a Gas; A Better Methodology for Calibrating Hydrazine Monitors.” InTech, October 2005, 48-50.

K. G. Asano, M. J. Ford, B. A. Tomkins, and G. J. Van Berkel. “Self-Aspirated Atmospheric Pressure Chemical Ionization Source for Direct Sampling of Analytes on Surfaces and in Liquid Solutions”. Rapid Communications in Mass Spectrometry, 2005; 19:2305-2312.

B. A. Tomkins, G. J. Van Berkel, R. A. Jenkins, and R. W. Counts. “Quantitation of Cotinine in Nonsmoker Saliva Using Chip-Based Nanoelectrospray Tandem Mass Spectrometry”, Journal of Analytical Toxicology, 30 (3) 178-186 (2006).

M. J. Ford, M. A. Deibel, B. A. Tomkins, and G. J. Van Berkel. “Quantitative Caffeine Analysis Using a Surface Sampling Probe Electrospray Ionization Tandem Mass Spectrometry System”, Anal. Chem. 77 (18), 4385-4389 (2005).

K. Korsah, W. P. Murray, and B. A. Tomkins, “An Improved Methodology for Calibrating Hydrazine Monitors”. Proceedings of the International Instrumentation Symposium (IIS), Presented by the ISA Aerospace Industries and Test Measurement Divisions 8–12 May 2005, Hilton Hotel, Knoxville, TN.

Engle, N. L.; Bonnesen, P. V.; Tomkins, B. A.; Haverlock, T. J.; Moyer, B. A. "Synthesis and Properties of Calix[4]arene-bis[4-(2-ethylhexyl)benzo-crown-6], a Cesium Extractant with Improved Solubility" Solvent Extr. Ion Exch. 2004, 22 (4), 611-636.

K. Korsah, W. P. Murray, and B. A. Tomkins, "An Improved Calibration Method for Hydrazine Monitors for the United States Air Force. Phase 1 of Air Force Hydrazine Detector Characterization and Calibration Project", June 6, 2003. ORNL/TM-2003/157.

K. Korsah, W. Murray, B. A. Tomkins, and D. Madden, "An Improved Method for Calibrating Hydrazine Monitors in the United States Air Force Inventory", Proceedings of the NCSL (National Conference of Standards Laboratories) Tampa, FL, August 17-21, 2003.

R. A. Jenkins, R. H. Ilgner, B. A. Tomkins, and D. W. Peters, "Development and Application of Protocols for the Calibration and Determination of Response of Real Time Particle Monitors to Common Indoor Aerosols," Journal of the Air and Waste Management Association, 54 (2004) 229-241.

Bruce A. Tomkins and Ralph H. Ilgner, "Determination of Atrazine and Four Organophosphorous Pesticides in Ground Water Using Solid Phase Microextraction (SPME) Followed by Gas Chromatography with Selected-Ion Monitoring", Journal of Chromatography A, 972, 183-194 (2002).

Bruce A. Tomkins and Angela R. Barnard, "Determination of Organochlorine Pesticides in Ground Water Using Solid-Phase Microextraction (SPME) Followed by Dual-Column Gas Chromatography with Electron Capture Detection", Journal of Chromatography A, 964, 21-33 (2002).

Bruce A. Tomkins and Gary A. Sega, "Determination of Thiodiglycol in Groundwater Using Solid Phase Extraction Followed by Gas Chromatography with Mass Spectrometric Detection in the Selected Ion Mode", in Proceedings of the 2001 Scientific Conference on Chemical & Biological Defense Research, 6-8 March 2001, Hunt Valley, MD, available on CD ROM.

B. A. Tomkins and Gary A. Sega, "Determination of Thiodiglycol in Groundwater Using Solid Phase Extraction Followed by Gas Chromatography with Mass Spectrometric Detection in the Selected Ion Mode," Journal of Chromatography A, 911, 85-96 (2001).

B. A. Tomkins, G. A. Sega, and C-h. Ho, "The Determination of Lewisite Oxide in Soil Using Solid Phase Microextraction: An Example of a New 'Green' Analytical Procedure", Proceedings of the American Society for Quality Energy and Environmental Division 2000 Energy and Environmental Conference, August 27-30, 2000, Tucson OMNI Hotel, Tucson, AZ, pp. 128-149. Available on CD-ROM.

B. A. Tomkins, "Explosives Analysis in the Environment", a chapter in Robert A. Meyers, ed., Encyclopedia of Analytical Chemistry, Chichester, John Wiley & Sons, Ltd., 2000, pp. 2402-2441.

B. A. Tomkins, Gary A. Sega, and C-h. Ho, "Determination of Lewisite Oxide in Soil Using Solid Phase Microextraction Followed by Gas Chromatography With Flame Photometric or Mass Spectrometric Detection" Journal of Chromatography A, 909, 13-28 (2001).

B. A. Tomkins , G. A. Sega , and S. J. Macnaughton, "The Quantitation of Sulfur Mustard By-Products, Sulfur- Containing Herbicides, and Organophosphonates in Soil and Concrete", Analytical Letters, 31(9), 1603-6122 (1998).

G. A. Sega, W. H. Griest, B. A. Tomkins, and C. K. Bayne, "The Hydrolysis of Di-isopropyl Methylphosphonate in Groundwater", Journal of Environmental Science and Health, Part A (Environmental Science and Engineering & Toxic and Hazardous Substance Control), A33(2), 213-236 (1998).

B. A. Tomkins, G. A. Sega, and S. J. MacNaughton, The Quantitation of Sulfur Mustard By-products and Two Sulfur-containing Herbicides in Soil and Concrete, Proceedings of the 1997 U. S. Army Edgewood Research, Develoment and Engineering Center, Scientific Conference on Chemical and Biological Defense Research, Edgewood Area Conference Center, Aberdeen Proving Ground, MD, November 18-21, 1997.

G. A. Sega, B. A. Tomkins, W. H. Griest, and C. K. Bayne, The Hydrolysis of Di-isopropyl Methylphosphonate in Groundwater, Proceedings of the 1997 U. S. Army Edgewood Research, Develoment and Engineering Center, Scientific Conference on Chemical and Biological Defense Research, Edgewood Area Conference Center, Aberdeen Proving Ground, MD, November 18-21, 1997.

G. A. Sega, B. A. Tomkins, and W. H. Griest, Analysis of Methyl Phosphonic Acid, Ethyl Methyl Phosphonic Acid and Isopropyl Methyl Phosphonic Acid at Low Microgram per Liter Levels in Groundwater, Journal of Chromatography A, 790, 143-152 (1997).

B. A. Tomkins, W. H. Griest, and D. R. Hearle, "Determination of Small Dialkyl Organophosphonates at Microgram/L Concentrations in Contaminated Groundwaters Using Multiple Extraction Membrane Disks", Analytical Letters, 30(9), 1697-1717 (1997).

B. A. Tomkins, W. H. Griest, and C. E. Higgins, "Determination of N-Nitrosodimethylamine at Part-Per-Trillion Levels in Drinking Waters and Contaminated Groundwaters", Proceedings of the 18th Annual EPA Conference on Analysis of Pollutants in the Environment, Marriott Waterside Hotel, Norfolk, VA, May 3-4, 1995. U. S. Environmental Protection Agency, Office Water, document no. EPA-821-H-96-001, received May 12, 1997. Slide presentation pp. 203-209. Text given on accompanying floppy disk, document no. EPA-821-H-96-009, pp. 253-269.

B. A. Tomkins, W. H. Griest, G. Connolly, and H. C. Hayes, "Determinations of N-nitroso-dimethylamine (NDMA) at Part-per-Trillion (ng/L) Concentrations in Contaminated Groundwaters and Drinking Waters Featuring Carbon-based Membrane Extraction Disks", Proceedings of the Twelfth Annual Waste Testing and Quality Assurance Symposium, July 23-23, 1996, Washington Hilton & Towers, Washington, D.C., pp. 423-431.

B. A. Tomkins and W. H. Griest, "Determinations of N-Nitrosodimethylamine (NDMA) at Part-Per-Trillion (ng/L) Concentrations in Contaminated Groundwaters and Drinking Waters Featuring Carbon-Based Membrane Extraction Disks", Analytical Chemistry, 68 (15), 2533-2540 (1996).

B. A. Tomkins, W. H. Griest, and C. E. Higgins, "Determination of N-Nitrosodimethylamine (NDMA) at Part-Per-Billion (ng/L) Levels in Drinking Waters and Contaminated Groundwaters", Analytical Chemistry, 67(23), 4387-4395 (1995).

B. A. Tomkins, "Screening Procedure for Sodium Fluoroacetate (Compound 1080) at Sub-Microgram/Gram Concentrations in Soils", Analytical Letters, 27(14), 2703-2718 (1994).

B. A. Tomkins, R. Merriweather, R. A. Jenkins, and Charles K. Bayne, "Determination of Eight Organochlorine Pesticides at Low ng/L Concentrations in Groundwater Using Filter Disk Extraction and Gas Chromatography", Journal of AOAC International, 75(6), 1091-1099 (1992).

W. H. Griest, R. S. Ramsey, C-h. Ho, and W. M. Caldwell, "Supercritical Fluid Extraction and Organic Solvent Extraction of Chemical Warfare Agent Simulants from Soil," Proceedings of the U. S. Army Chemical Conference on Chemical Defense Research, ERDEC-SP-002, June, 1993, pp. 257-263.

W. H. Griest, R. S. Ramsey, C-h. Ho, and W. M. Caldwell, "Supercritical Fluid Extraction of Chemical Warfare Agent Simulants from Soil," J. of Chromatography, 600, 273-277 (1992).

SELECTED ORAL PRESENTATIONS

B. A. Tomkins, G. J. Van Berkel, T. J. Tschaplinski, and N. L. Engle, “Evaluation of the Cellodextrin Profiles of the Enzymatic Digests of Switchgrass”.  Poster presented at the 57th ASMS Conference on Mass Spectrometry and Allied Topics, Philadelphia, PA, May 31-June 4, 2009.

B. A. Tomkins, G. J. Van Berkel, T. J. Tschaplinski, N. L. Engle, and S. Hamilton-Brehm, “Evaluation of the Cellodextrin Profiles of the Enzymatic Digests of Switchgrass”.  Poster presented at the BioEnergy Science Center Retreat, Crowne Plaza Hotel and Resort, Asheville, NC, June 22-24, 2009.

L. W. Hamlin, G. J. Van Berkel, and B. A Tomkins, “Ultrahigh Pressure Liquid Chromatography Mass Spectrometry of Glucose in Analysis of Cellulolysis”.  Poster presented as a deliverable for the Department of Energy Academies Creating Teacher Scientists (DOE ACTS) program, July 30, 2009.

P. T. A. Reilly, B. A. Tomkins, R. R. Smith, W. H. Griest, G. J. Van Berkel, and D. C. Duckworth, “A Survey of Surface Sampling Mass Spectrometric Methods for Chemical Weapons Forensic Analysis.” Presented to the 54th ASMS Conference, May 28 - June 1, 2006 in Seattle, WA.

R. A. Jenkins, B. A. Tomkins, R. W. Counts, P. Amick, R. I. Ilgner, M. L. Perry, R. W. Smithwick, III, and L. L. Lewis, “Variation of Personal Exposure to Environmental Tobacco Smoke in Workplaces and Residences”. Presented to the 15th Annual International Society of Exposure Analysis Conference, Tucson, AZ October 30 – November 3, 2005.

K. Korsah, W. P. Murray, and B. A. Tomkins, “An Improved Method for Calibrating Hydrazine Monitors.” Presented to the International Instrumentation Symposium (IIS), Presented by the ISA Aerospace Industries and Test Measurement Divisions 8–12 May 2005, Hilton Hotel, Knoxville, TN.

P. V. Bonneson, M. G. Gorbunova, N. L. Engle, E. Bazelaire, B. A. Tomkins, T. J. Haverlock, L. H. Delmau, and B. A. Moyer, "New Calixarene-Crown Extractants for Cesium Separation from High-Level Waste", presented to the 7th International Conference on Calixarenes (Calix2003) University of British Columbia, Vancouver, BC, Canada, August 13-16, 2003.

P. V. Bonnesen, N. L. Engle, M. G. Gorbunova, T. J. Haverlock, B. A. Tomkins, E. Bazelaire, L. H. Delmau, and B. A. Moyer, "Next Generation Extractants For Cesium Separation From High-Level Waste: From Fundamental Concepts To Site Implementation", presented to the "Environmental Management Science Program on Nuclear Waste Management," Division of Nuclear Chemistry and Technology, 226th ACS National Meeting, New York, NY, September 7-11, 2003.

K. Korsah, W. P. Murray, D. Madden, and B. A. Tomkins, "An Improved Method for Calibrating Hydrazine Monitors in the United States Air Force Inventory," presented to the NCSL (National Conference of Standards Laboratories) Tampa, FL, August 17-21, 2003.

L. H. Delmau, J. F. Birdwell, Jr., P. V. Bonnesen, D. A. Bostick, T. J. Haverlock, D. D. Lee, T. G. Levitskaia, B. A. Moyer, F. V. Sloop, Jr., and B. A. Tomkins, "Caustic-Side Solvent-Extraction: Efficient Process for Selective Extraction of Cesium from Savannah River Site high-Level Waste," presentation at the AIChE 2003 Spring National Meeting and Process Industries Exposition, New Orleans, Louisiana, March 30-April 3, 2003.

Bruce A. Tomkins, Gary A. Sega, and Angela R. Barnard, "Solid-Phase Microextraction: An Application of 'Green' Analytical Chemistry to the Clean-up of the U. S. Army Rocky Mountain Arsenal", an invited seminar presented to the Department of Chemistry, School of Chemical Sciences, University of Illinois at Urbana-Champaign, Urbana, IL, April 2, 2002.

Bruce A. Tomkins and Gary A. Sega, "Determination of Thiodiglycol in Groundwater Using Solid Phase Extraction Followed by Gas Chromatography with Mass Spectrometric Detection in the Selected Ion Mode", presented to the 2001 Scientific Conference on Chemical & Biological Defense Research, 6-8 March 2001, Hunt Valley, MD.

B. A. Tomkins, Gary A. Sega, and C-h. Ho, "The Determination of Lewisite Oxide in Soil Using Solid Phase Microextraction: An Example of a New "Green" Analytical Procedure", presented to American Society for Quality Energy & Environmental Division 2000 Energy and Environmental Conference, Tucson OMNI Hotel, Tucson, AZ, August 27-30, 2000. INVITED PRESENTATION.

B. A. Tomkins, Gary A. Sega, and C-h. Ho, "Determination of Lewisite Oxide in Soil Using Solid Phase Microextraction Followed by Gas Chromatography With Flame Photometric or Mass Spectrometric Detection", presented to ExTech® 2000, May 1-3, 2000, University of Waterloo, Ontario, Canada.

B. A. Tomkins, G. A. Sega, S. J. Macnaughton, "The Quantitation of Sulfur Mustard By-products and Two Sulfur-containing Herbicides in Soil and Concrete", presented to the 1997 Scientific Conference on Chemical and Biological Defense Research, Aberdeen Proving Ground, MD, November 18-21, 1997.

G. A. Sega, B. A. Tomkins, W. H. Griest, and C. K. Bayne, "The Hydrolysis of Di-isopropyl Methylphosphonate in Groundwater", presented to the 1997 Scientific Conference on Chemical and Biological Defense Research, Aberdeen Proving Ground, MD, November 18-21, 1997

B. A. Tomkins, W. H. Griest, G. Connolly and H. C. Hayes, "Determinations of N-Nitrosodimethylamine (NDMA) at Part-Per-Trillion (ng/L) Concentrations in Contaminated Groundwaters and Drinking Waters Featuring Carbon-Based Membrane Extraction Disks", presented to the 12th Annual Waste Testing & Quality Assurance Symposium, July 23-26, 1996, at the Washington Hilton & Towers in Washington, D. C.

B. A. Tomkins, W. H. Griest, and C. E. Higgins, "Determination of N-Nitrosodimethylamine (NDMA) at Part-Per-Trillion (ng/L) Levels in Drinking Waters and Contaminated Groundwaters", presented to the 18th Annual Conference on the Analysis of Pollutants in the Environment, Norfolk Waterside Marriott, Norfolk, VA, May 3-4, 1995.

B. A. Tomkins, "The Challenge of Quantitating Ultratrace Concentrations of Water-Miscible Polar Neutrals in Groundwaters", presented to the 35th ORNL-DOE Conference on Analytical Chemistry in Energy Technology, Park Vista Hotel, Gatlinburg, TN, October 11-13, 1994. Solicited paper. CONF-9410147.

B. A. Tomkins, R. A. Jenkins, R. Merriweather, and C. E. Higgins, "Solid Sorbent Technology for the Determination of Organic Pollutants in Soil, Air, and Water", poster presented to the Analytical Chemistry Division Information Meeting, March 18, 1992, Garden Plaza Hotel, Oak Ridge, TN.

B. A. Tomkins, R. Merriweather, and R. A. Jenkins, "Analysis of Eight Organochlorine Pesticides at Low Part-per-Trillion Concentrations in Groundwater", poster presented to the 105th AOAC Annual International Meeting and Exposition, The Pointe on South Mountain, Phoenix, AZ, August 12-15, 1991; presentation no. 318.

C.-h. Ho, W. H. Griest, R. S. Ramsey, and W. M. Caldwell, "Supercritical Fluid and Microsolvent Extraction of Chemical Warfare Agent Simulants from Soil," Scientific Conference on Chemical Defense Research, U. S. Army Chemical Research, Development and Engineering Center, Aberdeen Proving Ground, MD, November 19-22, 1991.

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